Quote:
Originally Posted by Kilroy
Question for you "car geeks". The machine that hooks into your tranny coolant lines, and then you run the car, and the old fluid is removed, and new fluid replaced, is this called a "flush", or is this just changing the fluid? I am confused. If it is just "changing the fluid", then what exactly is a "flush" (and don't say five cards of the same suit!!) 
|
That's a "change", just done the easy way. A "flush" is when they drop in chemical additives that eat all the sludge and residue off the inside of all the surfaces. This is the bad thing. Some people's clutch disks are well worn, and the residue and particles are the only thing left in the transmission helping to get friction. That's why trans flush is not recommended.
I would just have it drained, filter changed, and then refilled with Dextron IV or better. Don't waste your money on Redline or Royal Purple, unless you're gonna full-race that bad boy. And I don't recommend full synthetic on a high-mileage trans either.